Szczegóły CWE-1077

The code performs a comparison such as an equality test between two float (floating point) values, but it uses comparison operators that do not account for the possibility of loss of precision.

Sposoby wprowadzenia

Implementation

Odpowiednie platformy

Język

Class: Not Language-Specific (Undetermined)

Typowe konsekwencje

Metody wykrywania

Automated Static Analysis

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)

Uwagi dotyczące mapowania podatności

Uzasadnienie : This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Komentarz : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Odniesienia

REF-961

Automated Source Code Reliability Measure (ASCRM)
Object Management Group (OMG).
http://www.omg.org/spec/ASCRM/1.0/

REF-975

Comparing Floating Point Numbers, 2012 Edition
Bruce Dawson.
https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/

Zgłoszenie

Modyfikacje